Machine learning-based natural language processing to extract PD-L1 expression levels from clinical notes. - Eric Lin; Robert Zwolinski; Julie Tsu-Yu Wu; Jennifer La; Sergey Goryachev; Linden B. Huhmann; Cenk Yildirim; David P. Tuck; Danne C. Elbers; Mary T. Brophy; Nhan V. Do; Nathanael R. Fillmore (Health Informatics J., 2023)